M483CX manual air conditioner LG

website http://www.lgservice.com e-mail http://www.lgeservice.com/techsup.html

LG

LG Multi Type Air Conditioner

SERVICE MANUAL

MODEL: Indoor Unit: Wall Mounted Type TMNC092DYAA TMNC122DYAA TMNC182D5AA TMNC242D5AA TMNC092TYAA TMNC122TYAA TMNC182T5AA TMNC242T5AA Outdoor Unit: T2UC182FAA T2UC242FAA T2UC362FAA T2UC482FAA

TMNH092DYAA TMNH122DYAA TMNH182D5AA TMNH242D5AA TMNH092TYAA TMNH122TYAA TMNH182T5AA TMNH242T5AA T2UH182FAA T2UH242FAA T2UH362FAA T2UH482FAA

CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.

Multi Air Conditioner Service Manual

TABLE OF CONTENTS Safety Precautions ......................................................................................................................................3 Product Specifications

...............................................................................................................................7

Dimensions ..................................................................................................................................................9 Refrigeration Cycle Diagram ....................................................................................................................12 Wiring Diagram ..........................................................................................................................................13 Electronic Control Device .........................................................................................................................14 Schematic Diagram ...................................................................................................................................17 Functions ...................................................................................................................................................19 Operation Details ......................................................................................................................................22 Disassembly ..............................................................................................................................................26 2-way, 3-way Valve ....................................................................................................................................29 Cycle Troubleshooting Guide

..................................................................................................................33

Installation .................................................................................................................................................39 Flaring work and connection of piping

...................................................................................................42

Connecting the Cable Between Indoor Unit and Outdoor Unit Exploded View and Replacement Parts List

2 Multi Air Conditioner

.............................................................47

...........................................................................................49

Safety Precautions

Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

WARNING

This symbol indicates the possibility of death or serious injury.

CAUTION

This symbol indicates the possibility of injury or damage.

Meanings of symbol used in this manual are as shown below.

Be sure not to do. Be sure to follow the instruction.

WARNING Installation Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.

Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.

• There is risk of fire or electric shock.

• Moisture may condense and wet or damage furniture.

• There is risk of fire or electric shock.

Install the panel and the cover of control box securely.

Always install a dedicated circuit and breaker.

Use the correctly rated breaker or fuse.

• There is risk of fire or electric shock.

• Improper wiring or installation may cause fire or electric shock

Always ground the product.

• There is risk of fire or electric shock.

Service Manual 3

Safety Precautions Do not modify or extend the power cable.

Do not install, remove, or reinstall the unit by yourself (customer).

Be cautious when unpacking and installing the product.

• There is risk of fire or electric shock.

• There is risk of fire, electric shock, explosion, or injury.

• Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.

For installation, always contact the dealer or an Authorized Service Center.

Do not install the product on a defective installation stand.

Be sure the installation area does not deteriorate with age.

• There is risk of fire, electric shock, explosion, or injury.

• It may cause injury, accident, or damage to the product.

• If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.

Operational Do not touch(operate) the product with wet hands.

• There is risk of fire or electrical shock.

4 Multi Air Conditioner

Do not place a heater or other appliances near the power cable.

Do not allow water to run into electric parts.

• There is risk of fire and electric shock.

• It may cause There is risk of fire, failure of the product, or electric shock.

Safety Precautions Do not store or use flammable gas or combustibles near the product. • There is risk of fire or failure of product.

If strange sounds, or smell or smoke comes from product. Turn the breaker off or disconnect the power supply cable. • There is risk of electric shock or fire.

Gasolin

Do not open the inlet grille of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) • There is risk of physical injury, electric shock, or product failure.

Be cautious that water could not enter the product. • There is risk of fire, electric shock, or product damage.

Service Manual 5

Safety Precautions

CAUTION Installation check for gas (refrigerant) leakage after installation or repair of product. • Low refrigerant levels may cause failure of product.

Install the drain hose to ensure that water is drained away properly. • A bad connection may cause water leakage.

Keep level even when installing the product. • To avoid vibration or water leakage.

90Û

Operational Use two or more people to lift and transport the product.

• Avoid personal injury.

Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.

Do not touch the metal parts of the product when removing the air filter. They are very sharp!

• There is risk of fire, electric shock, or • There is risk of personal injury. damage to the plastic parts of the product.

x Wa Thinner

Do not step on or put anyting on the product. (outdoor units) • There is risk of personal injury and failure of product.

6 Multi Air Conditioner

Do not insert hands or other objects through the air inlet or outlet while the product is operated. • There are sharp and moving parts that could cause personal injury.

Product Specifications

Product Specifications Indoor Unit In d o o r u n i t t y p e

Wal l m o u n t ed

Model

TMNH092DYAA

TMNH122DYAA

Power Supply

Ø,V,Hz

1Ø, 220V, 60Hz

1Ø, 220V, 60Hz

Cooling Capacity

Btu/hr W

9,000 2,638

12,000 3,517

kcal/hr

2,268

3,024

Heating Capacity

Btu/hr

12,000 3,517

Current

Normal running current

W kcal/hr A

9,000 2,638 2,268 0.20

3,024 0.27

Fan

Model

RP15C-1 WEILING

Fan Type

CFF

Motor Output

W

Air Flow Rate

CMM(CFM)

37 7/6/5(247.1/211.8/176.5)

42 8.4/7.6/6.4(296.5/268.3/225.9)

µF/Vac

0.9/400

0.9/400

mm(inch)

5 20FPI S-FIN

5 20FPI S-FIN

2R 15C

2R 15C

34/31/29 R-22

40/37/34 R-22

Capacitor Coil

Tube Size (OD) Fins per inch No. of Rows & Column/No.

Sound Level(H/M/L) Referigerant

dB(A)± 3

Thermistor

Referigerant Control Piping Connection

RP15C-1 WEILING

CFF

Liquid

mm(inch)

6.35(1/4)

6.35(1/4)

Gas

mm(inch)

9.52(3/8)

12.7(1/2) 7/9 840*270*161 892*322*198

Net Weight

Indoor

kg(lbs)

Dimensions

W*H*D

mm(inch)

7/9 840*270*161

Packing Dimension W*H*D

mm(inch)

892*322*198

Service Manual 7

Product Specifications

Outdoor Unit Item

Unit A (SY 9K)

Capacity (Cooling/heating)

B (SY 9K ) A+B (9K+9K)

Power input (Cooling/heating) Running current (Cooling/heating) Power supply Power supply cable Connecting cable

2380/2420

A+B

A

8.6/ 7.6

11/11.3

1,220,60 3*2.5 4*0.75 2.85 9.7 3.20 10.9 Capillary 1050, R22 801*555*262 960*610*384 50 (110) Rotary 1 QJ278KDF LG SUNISO 4GSI PSC 410 0.276 (7.0) 18 2R 24C YGK25-6A-9 6 49 (1398) Propeller 1 / 18.1(460) Side discharge 1020 54(56) 1/4 (6.35) 3/8 (9.52) 1/4 (6.35) 3/8 (9.52) 30 7.5 15 / 7.5 80/168/192

1,220,60 3*2.5 4*0.75 2.96 10.1 2.91 9.9 Capillary A: 650 /B: 650 R22 870*655*320 1002*700*422 63 (139) Rotary 2 QK185KBK LG SUNISO 4GSI PSC 350 0.276 (7.0) 18 2R 28C KFD-60K11 6 40 (1142) Propeller 1 / 18.1(460) Side discharge 880 54(56) 1/4 (6.35) 1/2 (12.7) 1/4 (6.35) 1/2 (12.7) 30 7.5 15 / 7.5 65/138/156

heating

Outdoor Motor

Outdoor unit Outdoor unit Type Quantity Model name Maker Oil type MOTOR TYPE Oil charge Tube size (OD) FPI No. of rows & columns Model No. of poles

Air circulation Outdoor fan

f,V,Hz 2 No. * mm 2 No. * mm W/W Btu/hr W W/W Btu/hr W g(oz), type mm mm kg (lbs)

cc inch (mm)

CMM (CFM) Type No. used / dia. Dischage RPM

Noise level +3 SVC valves

3517 / 3517 12000 / 12000 3517 / 3517 12000 / 12000 7034 24,000

1850/1650

COP

Outdoor coil

T2UH242FAA

3077/ 3077 10500 / 10500 3077/ 3077 10500 / 10500 5275 / 5275 18,000 / 18,000

W

cooling

Compressor

T2UH182FAA

A+B

EER

Refrigerant control Refrigerant charge Dimensions (W*H*D) Packing dimensions (W*H*D) Net weight

W Btu/hr W Btu/hr W Btu/hr

Liquid A Gas A Liquid B Gas B

Max piping length total Std. Piping length Max. piping length per each room / elevation Stuff Quantity (Set) 20FT/40FT/40FT(H)

EA / inch (mm) ±30 dB +3(dB+1) inch (mm) inch (mm) inch (mm) inch (mm) m m m

Note : 1. Capacities are based on the following conditions: Cooling: - Indoor Temperature 26.7°C(80°F) DB / 19.4°C(67°F) WB - Outdoor Temperature 35°C(95°F) DB / 23.9°C(75°F) WB Piping Length - Interconnecting Piping Length 7.5m - Level Difference of Zero. 2. Due to our policy of innovation some specifications may be changed without notification. 3. At least two indoor units should be connected.

8 Multi Air Conditioner

Dimensions

Dimensions Indoor Unit H

W

D

Installation plate

Model TMNH092DYAA

Dimension

TMNH122DYAA

W

mm

840

840

H

mm

270

270

D

mm

161

161

Service Manual 9

Dimensions

Outdoor Unit Model: T2UH182FAA

L4

H

L3

L1 L9 L10 L10L10

L2

D

W

L6

MODEL DIM

L5

L7

L8

T2UH182FAA

W

mm

801

H

mm

555

D

mm

262

L1

mm

339

L2

mm

37

L3

mm

543.6

L4

mm

11.4

L5

mm

591

L6

mm

105

L7

mm

105

L8

mm

72.5

L9

mm

74.5

L10

mm

79

10 Multi Air Conditioner

Gas side 3-way valve

Liquid side 2-way valve

Dimensions

Model : T2UH242FAA

L4

H

L3

L1 L9 L10 L10L10

L2

D

W

MODEL DIM

L6

L5

L7

Gas side 3-Way valve

Liquid side 2-Way valve

L8

T2UH242FAA

W

mm

870

H

mm

655

D

mm

320

L1

mm

370

L2

mm

25

L3

mm

630

L4

mm

25

L5

mm

546

L6

mm

160

L7

mm

160

L8

mm

55

L9

mm

80

L10

mm

50

Service Manual 11

Refrigeration Cycle Diagram

Refrigeration Cycle Diagram T2UH182FAA / T2UH242FAA Indoor Side

Outdoor Side

12K A Comp

B Comp 12K

Refrigerent Flow Cooling Heating

12 Multi Air Conditioner

Wiring Diagram

Wiring Diagram Indoor Unit

Outdoor Unit 1. T2UH182FAA

2. T2UH242FAA

FAN RD BRYL

BL BLRD WH BL BK 2

BL

3

4

BL OR BL BL RD

BK

B/P1 B/P2

WH

BR

L 1

N

BR BR

WH BR

BK

BL

B

B

C

TB

TB

C

EBY49965301

EBY49965302

Service Manual 13

Electronic Control Device

Electronic Control Device Indoor Unit • MAIN P.C.B ASM

• TOP VIEW

• BOTTOM VIEW

14 Multi Air Conditioner

Electronic Control Device

Outdoor Unit

Service Manual 15

Electronic Control Device

Display P.C.B ASM

16 Multi Air Conditioner

Vcc

1

RECEIVER

Vout

GND

C

A

R01G

R13L 100 1/4W

SW(FORCE)

C13L 104

DISPLAY ASM PCB : 6871A20574A

HVB

R01G~R04G 220 1/8W

R02G

LED2 SLEEP

LED1 OPERATION

R03G

LED3 TIMER

R04G

LED4 OUTDOOR

DISPLAY BARE PCB : 6870A90240A

PLASMA

A B C

B

DISPLAY

STEPPING MOTOR (UP/DOWN)

7

7

2

1

1

1

2

1

5

4

3

7

7

8

5V

3

4

5

5

3

CN-12V

12V

C12L 220uF SD 10V

Q03G KRA107S

Q02G KRA107S

Q01G KRA107S

4

3

2

1

8

1

2

3

4

5

6

7

8

10K

10K

10K

SDA

SCL

WP

Vcc

5

6

7

8

5V

AC PART

SMD

+ C05D 220 10V SD

CI-B2012-100KJT R/TP 100nH

L02D

20K R02P (2012)

5V

Force

5V

R15L 20K

C04D 104,AXAIL 50V

C03D 104,AXIAL 50V

12V

DC LOW VOLTAGE GND

IC01D S78L05L 1W O I 7805

5V

C14L CHIP 103

R14L 1K

5V

R11H~R12H 20K,2012

EEPROM M24C01-MN6T SGS-THOMSON 8PIN SOP TRAY EEPROM IIC

A0

A1

A2

G

20K R01P (2012)

C01P,AXIAL,103,50V

5V

47K

47K

47K

IC01G KID65004AF

16

15

14

13

12

11

10

9

IC01M KID65004AF

9

1

16

4

2

3

15

13

6

11

14

7

5

10

12

C03T If CN-CENT don't use,this use resistor 10K(2012). CHIP 102 or 10K ohm resistor

HVB OUT

12V

+

5V

12V

HVB OUT

COMP

INDOOR FAN

CN-L/R

2 3 4 5 6 7

8

R X D

T X D

A V d d 1 A V s s

B Z

INT1

Vss1

INT0

AVref

AVdd

RESET

X2

X1

0J1H

R01D 4.7K 1/6W

C06J,AXIAL 222,400V

OPTION : noise character increasing thing

SMPS

1

158T 1-4 79T 4-3 79T

3 C05J 0.1uF 100V Metal film

C04J 1uF 50V +

R01B 1M

C09D open R21H

R02J 100,1/6W

DO6J 1N4937

RO1J 27K 1/4W,1% +

DC LOW VOLTAGE GND

IC01L TLP421(V4 BL)

NTC SCK-102

INT

R03H,1/6W,10K

R01H,1/6W,10K

C01H 103 AXIAL 50V

5V

R01E 1K

3

4

R02H 12.1K 1%

R07H 6.2K 1%

R03A,100

R02A,4.7K

R04L,1/6W 12K

3

5V

5V

1

2

3.6V

R03L 27k 1/6W

5V

D05J 1N4007

1 D01L 1N4148

DC HIGH VOLTAGE GND

2

R02L 300K 1/2W Anti Surge Res.

R01L 300K 1/2W Anti Surge Res.

D03J 1N4007

D01J 1N4007

INT

5V

receiver

5V

BZ01E PKM13EPY-4002

Only no low temporature detection function.

R05H 10K

C02A 10uF 50V

R05L 56K

R12L 5.1K

R02E,20

R04H 6.2K 1%

R01A,1K

Q01L KTC3198-Y 2SC5343

R21H~R26H 12.1K, 1%

C01L AXIAL 103 50V

C01A AXIAL 103 50V

R11L,1/6W 1K

R06H,1/6W,10K

5V

C03J 10uF 450V/SD

R26H

R25H

R24H

R23H

R22H

C02H 103 AXIAL 50V

DC HIGH VOLTAGE GND

C

IC01J LNK500P LINK SWICH D S

15pF

15pF

R01T,1K,AXIAL C01T CHIP(104) or 10K ohm resistor If CN-RF don't use,this use resistor 10K(2012).

C11L ,AXIAL 680pF,50V

OSC01B CSTS0800MG03-T2 CRTL8.00MSOT

C03H 103 AXIAL 50V

R03D 0 ohm

5V

10M,1W,5% noise character increasing thing

Anti Surge Res.

R03J

DMR40 EE1916S Lp=4.50mH,+-8%,40Khz 2UEW0.14 TIW0.25

28T

6

R02D 4.7K,1/6W

D01D UF4004 GLASS TYPE

C06D,AXIAL 102,400V

+ C01D 220UF 25V

8

OR6H OR5H OR4H OR3H OR2H OR1H F2 F1 Hi Med Low O/L

C07D,AXIAL 103,50V

OPTION : noise character increasing thing

5V

R04D 0 ohm

C10D open

33

36 35 34

38 37

42 41 40 39

44 43

47 46 45

48

IC02M KID65004AF

17 18 1920 21 22 23 24 25 26 27 28 29 30 31 32

Vdd0

Vss0

L01D,IMD ZBF503D-TA-K TDK TP 12uH

+ C02D 100uF 25V

1

NEC UPD780023AGC-C

0J2H

12 13 14 15 16

7 8 9 10 11

1

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

OPTION : import or export operation option

R11H

R12H

103,50V

C08D,AXIAL

1 2 3 4 5 6

1

2

PK BL 2

16 15 14 13 12 11 10 9

3

3

5V

D02J 1N4007

D04J 1IN4007

IC01A KIA7036P S7136

5V

R01F 560 1/4W

C02J METAL FILM 100nF/275V/436D

INDOOR FAN

12V

OR6H (PIN 28)

OR5H (PIN 29)

OR4H (PIN 30)

OR3H (PIN 31)

OR2H (PIN 32)

2

3

2

1

6

10K+-5%

GND

5K+-5%

PIPE-TH

1

4

5

R02F 680 1/2W

C01J METAL FILM 100nF/275V/436D

NF01J 40mH/1A P/no:6200JB8010P WRAC APPLIED

R03F 100,1/2W

IC01F TLP762JF

3

2

ZNR01J TVR10561

FUSE 250V/T2A

TR01F TRAICS T1SM1L43

T2

OR6H

OR5H

OR4H

OR3H

OR2H

OR1H

ZNR01F TVR10561

WIRE-N

NOTE

RY-4 WAY

RY- FAN 4

4

CN-LIVE

3

3

CN-N1

CN-N2

2

1

1

1

1

1

2 1

3 2

3

1

3

3

1

2

FAN

4WAY

COMP

12V

CN-4WAY YW396-03AV(YL)

on artworking,Eyelet pattern

3

2

PCB outside

1

Angle type

AC220~240V 50/60Hz

N

L

INDOOR FAN MOTOR

RELAY CONNECTION

CN-MOTOR YW396-03AV(WH)

RY-COMP G4A-1A-E-LG

3

4

2 Direct type

1

5

1

2

3

1

2

3

4

5

TERMINAL

4

1

2

2(N)

OUTDOOR FAN MOTOR

COMPRESSOR MOTOR

4-WAY

WIRE-N

1(L)

3

LOAD COMP 4WAY OUTDOOR FAN

L(AC)

CN-MOTOR CN-4WAY

SH-CAPACITOR

2. The unit of undefined capacitors is uF.

1. The unit of undefined resistance is ohm, 1/8W, 5%.

Option : only This is applied the H/P SRAC.

C01F METAL FILM 100nF/275V/436D

R04F 120, 1/2W

CN-LIVE

PTC-HEATER

RF Transmitter

ROOM-TH

PWB:6870A90243A PCB ASM : 6871A20577

5 6

4

7

5

4

7

3

2

3

1

2

1

2

3

4

3

2

1

1

1

2

3

4

CN-TH1

3

2

1

3

2

1

CN-RF

1

3

2 1

3

CN-P/O

CN-TH2

CN-OPTION

OR1H (PIN 33)

C02T CHIP(681)

12V

4

BARE PCB:6870A90238A ASM PCB:6871A20572

3

2

1

1

2

3

3

1

2

2

1

CN-HVB

GND

2

2

4

TXD

3

RXD

Force

receiver

1

1

2

3

4

5

6

1

CN-CENT

1

2

3

4

5

6

7

8

CN-DISP1

1

3

2

1

3

4

5

6

2

4

5

6

7

CN-DISP2

5

4

3

2

1

CN-U/D

4

5

3

2

Option

2

4

3

4

3

2

5

7

7

5

8

6

8

6

1

3

1

2

4

5

6

3

4

5

6

RD

OR

YL

PK

BL

12V

4

5

RD OR YL

FAN

STEPPING MOTOR (LEFT/RIGHT)

4WAY

DC PART

4 3

Option

Schematic Diagram

Schematic Diagram

Indoor Unit

Service Manual 17

Schematic Diagram

18

Multi Air Conditioner

Functions

Function of Indoor Unit Wall mounted type Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. Time Delay Safety Control • Restarting is inhibited for approx. 3 minutes. Indoor Fan Speed Control • High, Med, Low, Chaos Operation indication Lamps (LED) --- Lights up in operation --- Lights up in Sleep Mode --- Lights up in Energy Saving Mode --- Lights up in Defrost Mode(for Heating model) OUT DOOR

--- Lights up in Compressor operation(for Cooling model)

Health Dehumidification Operation • Intermittent operation of fan at low speed. Sleep Mode Auto Control • The fan is switched to low(Cooling), med(Heating) speed. • The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours. Natural Air Control by CHAOS Logic • The fan is switched to intermittent or irregular operation • The fan speed is automatically switched from high to low speed. Airflow Direction Control • The louver can be set at the desired position or swing up and down automatically.

Service Manual 19

Functions

Remote Controller Operation ON/OFF

Operation Mode Selection Cooling Operation Mode.( (Cooling model only)

)

Healthy Dehumidification Operation Mode.(

) Heating Operation Mode.(

Fan Speed Selection (Low)

(Med)

(High)

Energy Saving Mode

Temperature Setting TEMPERATURE

LOW

HIGH

Cooling

Down to 18°C Up to 30°C

JET COOL

Sleep Operation

: Cancel Sleep Mode, Timer ON or Timer OFF Airflow Direction Control

: 1, 2, 3, 4, 5, 6, 7, Off Timer Fan Operation Mode

: Fan Operates without cooling or heating.

20 Multi Air Conditioner

(CHAOS)

)

Function

Display Function Co o l i n g Mo d el Operation Indicator • Cooling, Soft Dry, Fan Sleep Timer Indicator • Sleep Mode Energy Saving Mode

Compressor on Indicator

OUT DOOR

Self-diagnosis Function Error Indicator • The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble. • Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table. • If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed. • After error occurrence, if error is released, error LED is also released simultaneously. • To operate again on the occurrence of error code 12, be sure to pull out power cord and then re-insert. • Having or not of error code is different from Model. Error Code

1

Error Display LED (Indoor body operation LED) (once) 3sec

3sec

3sec

Error contents • Indoor room temperature thermistor open/short • Indoor pipe temperature thermistor open/short.

SVC check point • Indoor Thermistor assembly check

Service Manual 21

Operation Details

Operation Details Function of Controls • DISPL AY C/O Model Operation Indicator • ON while in appliance operation, OFF while in appliance pause. • Sleep Mode

Comp. Running Incidator • Energy Saving Mode

Cooling Mode Operation • When the intake air temperature reaches0.5 °C below the setting temp, the compressorand the outdoor fan stop. • When itreaches0.5 °C above the setting temp, they start to operate again. Setting Temp+0.5°C Compressor ON Temp Compressor OFF Temp Setting Temp-0.5°C • While in compressorrunning, operating with the speedset by the remote control. While in compressor

Health • When the operation input by the remote control is received,the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature. 26°C ” Intake Air Temp 25°C Intake Air Temp-1°C 24°C ” Intake Air Temp